And so far there has been no indication that the anti-AV squad are planning to play with sufficient force their strongest card: Nick Clegg. The Lib Dem leader didn’t care for AV before the election (even Nick doesn’t agree with Nick) but he is now an enthusiastic advocate for it and the figure who it might be said has most to gain from a Yes vote in May. If the pro-AV cause becomes overly identified with Clegg it would have a problem.

For that reason, I’ll wager that the pro-AV campaign keeps Clegg as far from the frontline as possible in the campaign proper. Post tuition-fees, he has worse ratings than Hosni Mubarak, particularly amongst the Labour voters that the Yes campaign must convince if it is to win.